Hello. Please attach clear photographs of the concerned region. Gaps between teeth can be filled at any age. There are a wide variety of options which can be used to fill the space between your teeth. However, the amount of spacing plays a major role in deciding the treatment modalities. You can undergo an orthodontic treatment. Natural results and well aligned teeth can be achieved by orthodontic treatment (Braces-Metallic/Ceramic, Aligners/invisible braces) The time duration is between 1-2 years Cosmetic treatments like dental veneers or crowns or composite buildup are also good and quicker options which provide beautiful results. Kindly visit a dentist for definitive diagnosis and treatment.

Please attach some clear photographs of effected area for better guidance and treatment options. Yes it's possible to treat gaps, but treatment depends upon the extent of problem. So consult with doctor online or offline.